CN106476356A - A kind of flaxen fiber strengthens Rigid foam polyurethane and preparation method thereof - Google Patents

A kind of flaxen fiber strengthens Rigid foam polyurethane and preparation method thereof Download PDF

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Publication number
CN106476356A
CN106476356A CN201611143580.5A CN201611143580A CN106476356A CN 106476356 A CN106476356 A CN 106476356A CN 201611143580 A CN201611143580 A CN 201611143580A CN 106476356 A CN106476356 A CN 106476356A
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China
Prior art keywords
flaxen fiber
polyurethane
fiber
rigid foam
flaxen
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Application number
CN201611143580.5A
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Chinese (zh)
Inventor
刘雪强
蒋剡
李志刚
潘国立
于化峰
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CHANGCHUN BOCHAO AUTO ACCESSORIES Co Ltd
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CHANGCHUN BOCHAO AUTO ACCESSORIES Co Ltd
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Priority to CN201611143580.5A priority Critical patent/CN106476356A/en
Publication of CN106476356A publication Critical patent/CN106476356A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • B32B37/065Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method resulting in the laminate being partially bonded
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02Composition of the impregnated, bonded or embedded layer
    • B32B2260/021Fibrous or filamentary layer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04Impregnation, embedding, or binder material
    • B32B2260/046Synthetic resin
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02Synthetic macromolecular fibres
    • B32B2262/0261Polyamide fibres
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/06Vegetal fibres
    • B32B2262/062Cellulose fibres, e.g. cotton
    • B32B2262/065Lignocellulosic fibres, e.g. jute, sisal, hemp, flax, bamboo
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10Inorganic fibres
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10Inorganic fibres
    • B32B2262/101Glass fibres
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10Inorganic fibres
    • B32B2262/106Carbon fibres, e.g. graphite fibres
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00Electrical equipment
    • B32B2457/10Batteries
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00Vehicles
    • B32B2605/08Cars
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00Vehicles
    • B32B2605/12Ships
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00Vehicles
    • B32B2605/18Aircraft

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention discloses a kind of flaxen fiber strengthens composite plate and preparation method thereof, belong to automotive material and manufacture and design field.Described composite plate is the structure of two-layer panel layer laminboard layer, and described sandwich layer is constituted by as the shredding flaxen fiber of skeleton and the polyurathamc in filling skeleton space.Preparation method is first to lay the bast fibre felt of smart shredding on panel layer, then sprays polyurethane on bast fibre felt, then lays an aspect flaggy above, and then heated sizing and cooling obtains product.Flaxen fiber that the present invention is obtained strengthens composite plate with multilayer structure and has that good environmental protection, light weight, stiffness and strength be high, energy absorption performance is good, of many uses.Can be widely applied to the fields such as automobile, rail vehicle, Aero-Space, building, decoration, packaging, have a good application prospect, be a kind of light multifunction environment-friendly type flaxen fiber composite.

Description

A kind of flaxen fiber strengthens Rigid foam polyurethane and preparation method thereof
Technical field
The invention belongs to automotive material manufactures and designs field.
Background technology
With social progress, people improve constantly to demands such as environmental protection, energy-saving material-savings, to automobile and automotive upholstery material The requirement also more and more higher of material, Market competition.Lightweight is the trend of development of automobile, and therefore lightweighting materials are on automobile Application also will be more and more universal.Flaxen fiber, as organic material, has good performance, and environmental protection.Now common Linen fiber composite plates be all using panel between direct loading fill material composition.Such linen fiber composite plates, in mechanical property On there is no enough rigidity and intensity.
Content of the invention
For the problem that existing linen fiber composite plates mechanical property is not enough, the present invention proposes to increase between double face slab A kind of flaxen fiber strengthens polyurethane as intermediate layer, to realize a new flaxen fiber and to strengthen Rigid foam polyurethane.
Flaxen fiber in the present invention strengthens Rigid foam polyurethane using by the intermediate course structure between two-layer panel and two panels Become, wherein panel is linen fiber composite plates, flaxen fiber composite felt, carbon fiber composite board, aramid fiber composite plate, basalt fibre In composite plate, and fiberglass composite plate 1~2 kind, intermediate course by by as skeleton shredding flaxen fiber and filling bone The polyurathamc of built on stilts gap is constituted;Described polyurethane is hard polyurethane foam material;Shredding flaxen fiber is opened preferably through essence 80~100mm flaxen fiber of pine.
Shredding flaxen fiber is the flaxen fiber processing through smart shredding;Linen fiber composite plates and flaxen fiber composite felt are preferably by matter The amount fibrous composite plate that the modified polypropylene fiber than 60% is composited than the china-hemp fibers for 40% or composite felt.
Flaxen fiber strengthens the preparation method of Rigid foam polyurethane, comprises the following steps that:
Step one, the first bast fibre felt laid on linen fiber composite plates through smart shredding;
Step 2, on bast fibre felt spray polyurethane, obtain sandwich layer;Described polyurethane adopts hard polyurethane foam material Material, flaxen fiber with the mass ratio of polyurethane is, flaxen fiber 30~50%, polyurethane 50~70%.
Step 3, again one layer of linen fiber composite plates of laying on sandwich layer;
Step 4 and then in 120 DEG C~140 DEG C, 0.5~5MPa pressure hot pressing 30~100s molding.
Obtain flaxen fiber after step 5, cooling and strengthen Rigid foam polyurethane.
Step 6, to flaxen fiber strengthen Rigid foam polyurethane cut, obtain same size size flaxen fiber strengthen Rigid foam polyurethane.
Beneficial effects of the present invention:
, due to employing the mode of sandwich layer reinforcement, in the case of same quality, its Out-of Plane Stiffness is more preferable for this composite plate.Should There is plastic deformation when small deformation (little impact) in composite, deform and can recover after external force disappears.And when large deformation, by In the tensile characteristics of fibrous material, there is the feature of ductile rupture, in addition polyurethane foam material also has good energy absorption capacity Can, therefore this composite has good energy absorption characteristics, is applied to the safety that will be helpful on automobile improve vehicle.
The spy such as this composite plate has good environmental protection, light weight, Out-of Plane Stiffness intensity is high, energy absorption performance is good, of many uses Point.Can be widely applied to the fields such as automobile, hull, aircraft, building, furniture, decoration, packaging, cell package, high-pressure bottle, Have a good application prospect.
Brief description
Fig. 1 production line flow process figure;
Fig. 2 production line flow process front view;
The partial enlarged drawing of Fig. 3 production line flow process front view.
Fig. 4 composite plate schematic diagram;
Fig. 5 composite plate schematic diagram.
Specific embodiment
Embodiment 1
In the present embodiment, flaxen fiber enhancing Rigid foam polyurethane preparation method is as follows:
Step one, the first bast fibre felt that smart shredding is laid on linen fiber composite plates;
Step 2, on bast fibre felt spray polyurethane, obtain sandwich layer;Described polyurethane adopts hard polyurethane foam material Expect, flaxen fiber with the mass ratio of polyurethane is:Flaxen fiber 30%, polyurethane 70%.
Step 3, again one layer of linen fiber composite plates of laying on sandwich layer;
Step 4 and then in 120 DEG C~140 DEG C, 0.5~5MPa pressure hot pressing 30~100s molding.
Obtain flaxen fiber after step 5, cooling and strengthen Rigid foam polyurethane.
Step 6, to flaxen fiber strengthen Rigid foam polyurethane cut, obtain same size size flaxen fiber strengthen Rigid foam polyurethane.
Finally obtained flaxen fiber strengthens polyurethane composite board structure as shown in Figure 4 and Figure 5, and the present invention adopts two aspects The composite construction of flaggy laminboard layer, in the present embodiment, panel layer can select linen fiber composite plates, fiber crops according to needed for actual performance Fiber composite felt, carbon fiber composite board, aramid fiber composite plate, basalt fibre composite plate, and in fiberglass composite plate One or two kinds of combination, if selecting the Fructus Cannabis that linen fiber composite plates or flaxen fiber composite felt are preferably 40% by mass ratio Fibrous composite plate or composite felt that fiber and 60% modified polypropylene fiber are composited, can add fire-retardant as needed Agent, coupling agent etc. improves the performance of panel.The flaxen fiber shredding degree of smart shredding, with ultimate fibre overwhelming majority independent separate, is formed The flaxen fiber cluster of smart shredding is defined.
As shown in FIG. 1 to 3, it is that the present invention prepares the production line that flaxen fiber strengthens Rigid foam polyurethane.First It is divided into lowermost fibre plate laying apparatus 1, for laying lower floor's linen fiber composite plates;Part II is flaxen fiber refined opener 2, will It is laid on lower floor's linen fiber composite plates through the bast fibre felt of smart shredding, Part III is polyurethane foaming equipment 3, by poly- ammonia Ester sprays on bast fibre felt, and Part IV is used for laying upper strata linen fiber composite plates for top fiber plate laying apparatus 4, and the 5th Part be heat-shaping equipment 5,120 DEG C~140 DEG C, 0.5~5MPa pressure hot pressing 30~100s carry out heat-shaping process. Part VI is cooling device 6, the flaxen fiber of molding is strengthened Rigid foam polyurethane and is cooled to room temperature, after through cutting device 7 Flaxen fiber after cooling is strengthened Rigid foam polyurethane and cuts into equal-specification size.
Embodiment 2
Step one, the first bast fibre felt laid on linen fiber composite plates through smart shredding;
Step 2, on bast fibre felt spray polyurethane, obtain sandwich layer;Described polyurethane adopts hard polyurethane foam material Expect, flaxen fiber with the mass ratio of polyurethane is:Flaxen fiber 40%, polyurethane 60%.
Step 3, again one layer of linen fiber composite plates of laying on sandwich layer;
Step 4 and then in 120 DEG C~140 DEG C, 0.5~5MPa pressure hot pressing 30~100s molding.
Obtain flaxen fiber after step 5, cooling and strengthen Rigid foam polyurethane.
Step 6, to flaxen fiber strengthen Rigid foam polyurethane cut, obtain same size size flaxen fiber strengthen Rigid foam polyurethane.
Embodiment 3
Step one, the first bast fibre felt laid on linen fiber composite plates through smart shredding;
Step 2, on bast fibre felt spray polyurethane, obtain sandwich layer;Described polyurethane adopts hard polyurethane foam material Expect, flaxen fiber with the mass ratio of polyurethane is:Flaxen fiber 50%, polyurethane 50%.
Step 3, again one layer of linen fiber composite plates of laying on sandwich layer;
Step 4 and then in 120 DEG C~140 DEG C, 0.5~5MPa pressure hot pressing 30~100s molding.
Obtain flaxen fiber after step 5, cooling and strengthen Rigid foam polyurethane.
Step 6, to flaxen fiber strengthen Rigid foam polyurethane cut, obtain same size size flaxen fiber strengthen Rigid foam polyurethane.
The bast fibre felt of above example essence shredding is obtained through smart shredding by the flaxen fiber of 80~100mm.
Compliance test result
Content according to filling flaxen fiber is different, measures data, is analyzed:Obtained impact strength and stretching Strength character data is as shown in table 1,
Table 1
The content of natural fiber in polyurethane sandwich layer 0% 30% 40% 50%
Impact strength (KJ/m2) 11 14 16 19
Tensile strength (MPa) 90 180 200 210
Shown by experimentation, the mechanical property that the flaxen fiber after fiber reinforcement strengthens Rigid foam polyurethane is substantially better than Do not pass through fibre-reinforced similar Rigid foam polyurethane, its impact strength increases up to more than 60%.

Claims (6)

1. a kind of flaxen fiber strengthens Rigid foam polyurethane, is made up of the intermediate course between two-layer panel and two panels, its feature exists In described panel is linen fiber composite plates, flaxen fiber composite felt, carbon fiber composite board, aramid fiber composite plate, basalt are fine In dimension composite plate, and fiberglass composite plate 1~2 kind;Described intermediate course by as skeleton shredding flaxen fiber and The polyurathamc in filling skeleton space is constituted.
2. flaxen fiber according to claim 1 strengthens Rigid foam polyurethane it is characterised in that panel layer linen fiber composite plates Or flaxen fiber composite felt.
3. flaxen fiber according to claim 2 strengthen Rigid foam polyurethane it is characterised in that described linen fiber composite plates and Flaxen fiber composite felt is the fiber composite being composited than 60% modified polypropylene fiber by the china-hemp fibers that mass ratio is 40% Plate or composite felt.
4. flaxen fiber according to claim 1 strengthens Rigid foam polyurethane it is characterised in that described polyurethane gathers for hard Urethane expanded material.
5. flaxen fiber according to claim 1 strengthens Rigid foam polyurethane it is characterised in that described shredding flaxen fiber is 80~100mm flaxen fiber through smart shredding.
6. flaxen fiber as claimed in claim 1 strengthens the preparation method of Rigid foam polyurethane, comprises the following steps that:
Step one, the first bast fibre felt laid on linen fiber composite plates through smart shredding;
Step 2, on bast fibre felt spray polyurethane, obtain sandwich layer;Flaxen fiber with the mass ratio of polyurethane is, flaxen fiber 30 ~50%, polyurethane 50~70%;
Step 3, again one layer of linen fiber composite plates of laying on sandwich layer;
Step 4 and then in 120 DEG C~140 DEG C, 0.5~5MPa pressure hot pressing 30~100s molding;
Obtain flaxen fiber after step 5, cooling and strengthen Rigid foam polyurethane.
CN201611143580.5A 2016-12-13 2016-12-13 A kind of flaxen fiber strengthens Rigid foam polyurethane and preparation method thereof Pending CN106476356A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107443829A (en) * 2017-09-12 2017-12-08 吉林大学 Flaxen fiber braiding enhanced foaming sandwich structure composite material of suture connection and preparation method thereof
CN108582908A (en) * 2018-04-24 2018-09-28 吉林大学 A kind of bamboo fiber reinforcement polycaprolactone composite plate and preparation method thereof containing argy wormwood
WO2022141831A1 (en) * 2020-12-31 2022-07-07 泰州市华丽新材料有限公司 High-strength fireproof board, a wear-resistant fireproof veneer using same as base material, and manufacturing method

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Publication number Priority date Publication date Assignee Title
US5037690A (en) * 1987-11-27 1991-08-06 De Groot Automotives, B.V. Shaped product comprising a thermoset, foamed, plastics sheet material reinforced with coherent natural-fibre material, and a process for making the shaped product
CN104002879A (en) * 2014-05-27 2014-08-27 长城汽车股份有限公司 Automobile spare tire cover plate and processing process and processing device thereof
CN104742460A (en) * 2015-04-15 2015-07-01 洛阳双瑞橡塑科技有限公司 Passenger car floor of sandwich structure
CN206277734U (en) * 2016-12-13 2017-06-27 长春博超汽车零部件股份有限公司 A kind of flaxen fiber strengthens Rigid foam polyurethane

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5037690A (en) * 1987-11-27 1991-08-06 De Groot Automotives, B.V. Shaped product comprising a thermoset, foamed, plastics sheet material reinforced with coherent natural-fibre material, and a process for making the shaped product
CN104002879A (en) * 2014-05-27 2014-08-27 长城汽车股份有限公司 Automobile spare tire cover plate and processing process and processing device thereof
CN104742460A (en) * 2015-04-15 2015-07-01 洛阳双瑞橡塑科技有限公司 Passenger car floor of sandwich structure
CN206277734U (en) * 2016-12-13 2017-06-27 长春博超汽车零部件股份有限公司 A kind of flaxen fiber strengthens Rigid foam polyurethane

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* Cited by examiner, † Cited by third party
Title
田民波: "《材料学概论》", 31 August 2015, 清华大学出版社 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107443829A (en) * 2017-09-12 2017-12-08 吉林大学 Flaxen fiber braiding enhanced foaming sandwich structure composite material of suture connection and preparation method thereof
CN108582908A (en) * 2018-04-24 2018-09-28 吉林大学 A kind of bamboo fiber reinforcement polycaprolactone composite plate and preparation method thereof containing argy wormwood
CN108582908B (en) * 2018-04-24 2023-11-17 吉林大学 Bamboo fiber reinforced polycaprolactone composite board containing mugwort and preparation method thereof
WO2022141831A1 (en) * 2020-12-31 2022-07-07 泰州市华丽新材料有限公司 High-strength fireproof board, a wear-resistant fireproof veneer using same as base material, and manufacturing method

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Application publication date: 20170308